Valve-gear for explosive-engines.



PATENTED AUG. 13, 1907.

P. MEYER.

VALVE GEAR FOR EXPLOSIVE ENGINES. APPLICATION FILED 00121. 1902.

PAUL MEYER, OF HALLE-ON-THE-SAALE, GERMANY.

VALVE-GEAR FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application filed October 1,1902. Serial No. 125,598.

To all whom it may concern:

Be it known that I, PAUL MEYER, a subject of the German Emperor, and a resident of I-Ialle-on-the-Saale, German Empire, have invented certain new and useful Improvements in Valve-Gear for Explosive-Engines, of which the following is a description.

The present invention relates to four cycle motors or engines driven by combustion or explosive power and consists of the details of construction herein after set forth and particularly pointed out in the claims.

In order to render the present specification easily intelligible reference is had to the accompanying drawing in which similar letters of reference denote similar parts throughout the several views Figure 1 is a side elevation partly in section of a vertical engine embodying the present invention, Figs. 2 and 3 are detail sectional elevations showing two ar- 'rangements of the governors in connection with the present improvements.

As illustrated in the drawing the motor is of the vertical type and the inlet and exhaust valves (1 and b are mounted vertically one above the other coaxially. These valves may be of the ordinary spring actuated construction, but are mounted at the side of the cylinder. One or both of these valves are operated by means of cam surfaces such as and h advantageously of hollow cylindrical or annular form, which are suitably mounted on the upper part of a vertically disposed rotary spindle c. This latter is supported in an upper bearing m and its lower end is rounded as at n and supported in a suitable socket r mounted on the bed of the engine. This arrangement enables the spindle to be tilted in its lower bearing after the upper bearing m has been detached, so that the whole spindle together with the parts attached to it may be easily removed from the engine for the purposes of cleaning or repairs. The spindle c is rotated from the crank shaft by means of screw or spiral gears e and d the former being keyed to the spindle, the latter to the crank shaft, the spindle being driven at half the speed of the crank shaft.

The exhaust valve 1) is operated by the cam h by means of the pivotally supported rocking arm k, having antifriction rolls k at each end while the inlet valve a is worked from the cam by means of the pivotally supported rocking arms 1' with antifriction roll 1' pivotally supported at i and Z and connecting rod 2'. Any other suitable mechanism might be employed, the device described bcing merely one embodiment.

As illustrated in Fig. 2 the body carrying the cams g and h may be formed to a housing 0 in which the governors p may be mounted to rotate with the said housing.

In Fig. 3 the governors p are mounted at the top of the spindle c and the housing is omitted.

The governor balls and arms p operate the spring pressed rod 4 which is guided vertically and coupled by a stirrup-like connection 8 to the vertical rod 2, the length of which may be adjusted as at 3 and the upper end of which is hinged to one end of a. double arm lever Z pivotally supported on the machine at 7. The other end of this lever is connected by a pin and slot connection to the throttle valve 5 and works this in the ordinary known manner so that the fuel feed will be controlled by the speed of the governor.

The cams g and h may be employed to operate both valves aand b or only one cam may be used and only one of the said valves, for instance, the exhaust valve 1) may be operated. The cams have been described as operating the inlet and exhaust valves only, but it will be obvious that more cams might be employed, or that these cams could be used to operate other devices for instance a starting valve, or an electric or glow tube igniting device or a gas valve or a valve for liquid fuel or the like.

Owing to the spindle 0 being driven by means of the spiral or screw gears d and e its center line will not tran sect that of the crank shaft but the spindle is mounted laterally of the same.

I claim as my invention:-

1. In a gas or explosive power meter of the vertical type having coaxial superposed inlet and exhaust valves and springs to retain the same normally closed, the combination of levers adapted to periodically open the same, a rotary vertically disposed spindle having at its upper end a series of concentrical superposed cams, with cam surfaces projecting stepwise one beyond the other and operating in vertical planes, the ends of the said valve oper ating,- levers, extending into the part of the said cam surfaces and being operated, cach by one of the said cams, and gearing at the lower end of the said spindle to gear it with the main driving shaft substantially as described.

2. In a gas or explosive power motor of the vertical type, having coaxial, superposed inlet and exhaust valves, and springs to normally keep the same closed, the combina rion of a pivotally supported double arm lever having rolls at each end to operate the lower valve and a second similar lever havingrolls, a rod connected to the second lever and to an upper pivotally supported lever to operate the upper valve, a Vertically disposed rotary spindle having superposed concentric cams projectingstepwise one beyond the other at its upper end, the said cams acting in vertical planes, and being adapted to engage each with one of the valve operating levers and means at the lower end of the shaft for driving it'from the main driving shaft substantially as described.

3. In a gas or explosive power motor of; the vertical type, having coaxial. superposed inlet and exhaust valves, and springs to retain the same normally closed, the combination of levers adapted to periodically open the same, a rotary vertically disposed spindle having at its upper end a series of coneentrical superposed cams, with cam surfaces adapted to operate in vertical planes and projecting stepwise one beyond the other, the ends of the said valve operating levers extending into the respective paths of the said cam surfaces and adapted to be operated by the same, gearing at the lower end of the said spindle to gear it to the main driving shaft, :1 housing above the said cams having governor arms with governor balls pivotally supported therein, a spring pressed rod adapted to be operated by said governor arms and extending out at the top of the housing and a throttle valve and lever connection from said spindle to said valve in the manner and for the purpose substantially as described. In witness whereof I have presence of two witnesses.

hereunto set my hand in PAUL MEYER.

Witnesses RUDOLPH FRIcKn, B. H. WARNER. 

